WO2015176514A1

WO2015176514A1 - Passive radio frequency identification tag, radio frequency read/write head and radio frequency identification system

Info

Publication number: WO2015176514A1
Application number: PCT/CN2014/091810
Authority: WO
Inventors: 徐继东; 陆建鑫; 付志明
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-05-23
Filing date: 2014-11-20
Publication date: 2015-11-26
Also published as: EP3142047B1; CN105095928A; EP3142047A1; EP3142047A4

Abstract

Disclosed are a passive radio frequency identification tag, a radio frequency read/write head and a radio frequency identification system. The radio frequency tag identification system comprises: a radio frequency antenna, connected to a chip; a plurality of optical emitters, connected to the chip; the chip, arranged to control an optical emitter within the plurality of optical emitters, the optical emitter corresponding to a designated radio frequency identification tag, to emit light when a read/write operation is performed on the designated radio frequency identification tag within a plurality of radio frequency identification tags, so as to turn on the designated radio frequency identification tag, and perform the read/write operation on the designated radio frequency identification tag. The present invention implements contactless-type radio frequency identification, reducing or preventing interference between radio frequency identification tags in a dense scenario.

Description

Passive RFID tags, RF read/write heads and RFID systems

Technical field

The present invention relates to the field of communications, and in particular to a passive radio frequency identification tag, a radio frequency read/write head, and a radio frequency identification system.

Background technique

With the mature development of optical fiber communication technology and the continuous demand of the modern information society for the network, the optical fiber network has replaced the copper wire communication network, and its network from the core network, the bearer network to the access network and then the fiber to the home (FTTH, Fiber) To The Home) covers almost all communication networks. There are a large number of optical fibers and connection points in the entire fiber network. How to identify these fibers and their connection becomes a time-consuming and laborious task for operators. In order to improve work efficiency and reduce work intensity, a smart tag is added to each optical connection point. Then, it is automatically read by the head, and the relevant data is reported to the network management system, so that the automation of the fiber connection point detection gradually becomes a consensus, and the visible and manageable fiber network is realized.

The intelligent optical distribution network is to intelligently report the connection status by labeling each optical connector and the head. The Optical Distribution Network (ODN) has been standardized by the China Communications Standards Association (CCSA) and the corresponding industry chain has begun to take shape.

At present, the intelligent ODN mainly adopts two kinds of label technologies: one is a contact label technology, and a typical one is a 1-Wire interface, or an EEPROM (Electrically Erasable Programmable Read-Only Memory) interface, such as As shown in Figure 1, the tag needs to be powered. Contact label technology places higher demands on the design and reliability of the label structure, and is not flexible enough in some transformation scenarios due to physical connections. The other is non-contact label technology, which is typically radio frequency identification (RFID) technology. As shown in Figure 2, due to its working principle, that is, cutting magnetic lines generate induced current, its coil needs to have a certain coil. The working area is to generate enough induction current to drive the chip to work normally. Secondly, the working coil of the head has a certain working area, and the adjacent RFID is also induced to cause mutual interference, so the technology is not suitable for the technology. The working environment of the optical node of the dense fiber connector.

In view of this, there is a need for a tag that maintains both contactless reading and writing while also meeting the read and write techniques of other tags required by the optical nodes of dense fiber connectors.

Summary of the invention

The embodiments of the present invention provide a passive radio frequency identification tag, a radio frequency read/write head, and a radio frequency identification system, so as to at least solve the problem that the contact tag technology and the RFID tag cannot meet the dense scene in the related art.

According to an aspect of the present invention, a radio frequency read/write head includes: a plurality of light emitters, a chip, and a radio frequency antenna, wherein the radio frequency antenna is connected to the chip; the plurality of light emitters Connected to the chip; the chip is configured to control, in a read/write operation of the radio frequency identification tag specified in the plurality of radio frequency identification tags, corresponding to the specified radio frequency identification tag in the plurality of light emitters The light emitter emits light to turn on the designated radio frequency identification tag; and read and write the specified radio frequency identification tag.

Preferably, the radio frequency read/write head comprises one of the radio frequency antennas.

Preferably, each of the light emitters is a light emitting diode (LED).

According to another aspect of the present invention, a passive radio frequency identification tag is provided, including: a photoelectric converter, a radio frequency antenna, and a chip, wherein the photoelectric converter is connected to the chip and the radio frequency antenna, and is set The chip and the radio frequency antenna are powered for converting light energy emitted by the radio frequency head into electrical energy; the radio frequency antenna is connected to the chip; the chip is configured to store tag information, and a response station The read and write operations of the RF read/write head.

According to still another aspect of the present invention, a radio frequency tag identification system includes: a plurality of passive radio frequency identification tags and a radio frequency read/write head, wherein

Each of the passive radio frequency identification tags includes: a photoelectric converter, a first radio frequency antenna, and a first chip, wherein the photoelectric converter is connected to the first chip and the first radio frequency antenna, and is configured to Converting light energy emitted by the radio frequency read/write head into electrical energy to supply power to the first chip and the first radio frequency antenna; the first chip is configured to store tag information, and to respond to the radio frequency read/write head Read and write operations.

The radio frequency read/write head includes: a plurality of light emitters, a second chip, and a second RF antenna, wherein the second RF antenna is connected to the second chip; the plurality of light emitters, and The second chip is connected to the second chip, and is configured to control the specified radio frequency in the plurality of optical transmitters when performing read and write operations on the radio frequency identification tags in the plurality of radio frequency identification tags Identifying, by the light emitter corresponding to the label, illumination to activate the designated radio frequency identification tag; and performing read and write operations on the designated radio frequency identification tag.

Preferably, the radio frequency read/write head includes one of the second radio frequency antennas.

Preferably, each of the light emitters is an LED.

According to still another aspect of the present invention, an optical fiber connector is provided, and the above-described passive radio frequency identification tag of the present invention is disposed on the fiber connector.

According to still another aspect of the present invention, there is provided a fiber optic wiring device, wherein the fiber optic wiring device is provided with the radio frequency read/write head of the present invention; wherein the wiring device comprises a plurality of connection ports, each of the connections The port is configured as a pluggable connection to the fiber optic connector of the present invention; the plurality of optical transmitters of the radio frequency identification head are located, when a plurality of the fiber optic connectors are inserted into the plurality of connectors, respectively The position of the passive RFID tag on the fiber connector is directly opposite.

According to still another aspect of the present invention, there is provided a method for reading and writing a radio frequency identification tag system, the radio frequency tag system comprising: the radio frequency read/write head of the present invention, and a plurality of the above-mentioned passive radio frequency identification tags of the present invention; The method includes: determining a passive radio frequency identification tag that is currently read and written; controlling a light emitter corresponding to the currently read and write passive radio frequency identification tag in the radio frequency read/write head to emit light for the current read and write Passive radio frequency identification tag power supply; read and write operations on the currently read and write passive radio frequency identification tag.

Preferably, the reading and writing operation of the currently read and write passive radio frequency identification tag comprises: sending an inquiry instruction to the currently read and write passive radio frequency identification tag, wherein the inquiry command is used to query the current The state of the passive radio frequency identification tag read and written; receiving the first state of the passive radio frequency identification tag currently being read and written.

Preferably, the method further includes: determining the first state; and when the first state indicates that the currently read and write passive radio frequency identification tag is blank, assigning the currently read and write passive radio frequency identification tag Label Information.

Preferably, the method further includes: determining the first state; and when the first state indicates that the currently read and written passive radio frequency identification tag has tag information, requesting the currently read and write passive radio frequency identification tag Report its label information.

Preferably, the method further includes: receiving label information reported by the currently read and write passive radio frequency identification tag; determining whether the received tag information meets a preset condition; and when the received tag information does not meet the pre- When the condition is set, new tag information is allocated to the currently read and write passive radio frequency identification tag.

Preferably, after performing the read and write operation on the currently read and write passive radio frequency identification tag, the method further includes: turning off a light emitter corresponding to the currently read and write passive radio frequency identification tag in the radio frequency read/write head; Reading and writing operations on other passive radio frequency identification tags of the plurality of passive radio frequency identification tags.

According to still another aspect of the present invention, there is provided a read/write device for a radio frequency identification tag system, the radio frequency tag system comprising: the radio frequency read/write head of the present invention, and a plurality of the above-mentioned passive radio frequency identification tags of the present invention; The device includes: a determining module configured to determine a passive radio frequency identification tag currently read and written; and a control module configured to control light emission corresponding to the currently read and write passive radio frequency identification tag in the radio frequency read/write head The device emits light to supply power to the currently read and write passive radio frequency identification tag; the read/write module is configured to perform read and write operations on the currently read and write passive radio frequency identification tag.

Through the embodiments of the present invention, a non-contact radio frequency identification is implemented, which reduces or avoids mutual interference of radio frequency identification tags in a dense scene.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a contact tag technology according to the related art;

2 is a schematic diagram of an RFID technology according to the related art;

3 is a structural block diagram of a radio frequency read/write head according to an embodiment of the present invention;

4 is a structural block diagram of a passive radio frequency identification tag according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a radio frequency tag identification system according to an embodiment of the present invention; FIG.

6 is a schematic view of a fiber optic connector and a fiber optic wiring device in accordance with an embodiment of the present invention;

7 is a flow chart of a method for reading and writing a radio frequency identification tag system according to an embodiment of the present invention;

8 is a block diagram showing the structure of a read/write device of a radio frequency identification tag system according to an embodiment of the present invention;

9 is a schematic diagram of a preferred radio frequency identification system in accordance with an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following embodiments, a non-contact labeling scheme is provided for charging a radio frequency identification tag (RFID) using a photoelectric converter technology, and a radio frequency identification tag having a photoelectric converter is simply referred to as an optical radio frequency identification tag (ORFID, Optical). RFID), also known as passive RFID tags.

Embodiment 1

3 is a structural block diagram of a radio frequency read/write head according to an embodiment of the present invention. As shown in FIG. 3, the radio frequency read/write head of the embodiment of the present invention may include: a plurality of optical transmitters 310, a chip 320, and a radio frequency antenna 330, wherein The RF antenna 330 is connected to the chip 320; the plurality of light emitters 310 are connected to the chip 320; and the chip 320 is configured to control multiple radio frequency identification tags in the plurality of radio frequency identification tags to perform read and write operations. The light emitter 310 corresponding to the designated radio frequency identification tag in the light emitter 310 emits light to turn on the designated radio frequency identification tag; and performs read and write operations on the designated radio frequency identification tag.

In a preferred embodiment of the embodiment of the present invention, the radio frequency head can include only one radio frequency antenna 330. With this preferred embodiment, it is not necessary to provide one radio frequency antenna for each radio frequency identification tag, thereby reducing the cost.

Of course, in the embodiment of the present invention, it is also possible to provide a plurality of radio frequency antennas 330. In order to avoid mutual interference, it is preferable to maintain a certain distance between the plurality of radio frequency antennas 330.

In a preferred embodiment of the embodiment of the present invention, the light emitter 330 may be an LED, but is not limited thereto.

Embodiment 2

4 is a structural block diagram of a passive radio frequency identification tag according to an embodiment of the present invention. As shown in FIG. 4, the passive radio frequency identification tag of the embodiment of the present invention mainly includes: an optical to electrical converter (OEC). 410, the RF antenna 420, the chip 430, wherein the photoelectric converter 410 is connected to the chip 430 and the RF antenna 420, and is configured to convert the light energy emitted by the RF head into electrical energy to supply power to the chip 430 and the RF antenna 420; The RF antenna 420 is connected to the chip 430; the chip 430 is configured to store tag information and to respond to read and write operations of the RF read/write head.

Embodiment 3

FIG. 5 is a schematic diagram of a radio frequency tag identification system according to an embodiment of the present invention. As shown in FIG. 5, the system includes: a plurality of passive radio frequency identification tags 1 and a radio frequency read/write head 2, wherein

Referring to FIG. 4, each passive radio frequency identification tag 1 includes: a photoelectric converter, a radio frequency antenna, and a chip, wherein the photoelectric converter is connected to the chip and the radio frequency antenna, and is configured to convert the light energy emitted by the radio frequency head to Power, powering the chip and the RF antenna; the chip is configured to store tag information and to respond to read and write operations of the RF read/write head 2.

Referring to FIG. 3, the radio frequency read/write head includes: a plurality of optical transmitters, chips, and radio frequency antennas, wherein the radio frequency antenna is connected to the chip; a plurality of optical transmitters are connected to the chip; and the chip is set to be in the pair When a radio frequency identification tag is specified for reading and writing in a plurality of radio frequency identification tags, controlling light emitters corresponding to the specified radio frequency identification tags in the plurality of light emitters to turn on the designated radio frequency identification tag; and reading the designated radio frequency identification tag Write operation.

In an embodiment of the embodiment of the present invention, the radio frequency head 2 may include only one radio frequency antenna.

In an embodiment of the embodiment of the present invention, the light emitter may be an LED, but is not limited thereto.

For the description of the passive radio frequency identification tag 1 and the radio frequency read/write head 2, reference may be made to the descriptions of the first embodiment and the second embodiment, and details are not described herein again.

Embodiment 4

FIG. 6 is a schematic diagram of a fiber optic connector and a fiber optic wiring device according to an embodiment of the present invention. As shown in FIG. 6, each of the fiber optic connectors is provided with a passive radio frequency identification tag of the second embodiment. The radio frequency read/write head of the first embodiment is disposed on the optical fiber wiring device. Wherein, the wiring device comprises a plurality of connection ports, each connection port is configured as a pluggable connection fiber connection head; and a plurality of optical transmitters of the radio frequency identification head are located, when a plurality of fiber connection heads are inserted into the plurality of connection ports, respectively The location that is opposite the passive RFID tag on the corresponding fiber connector.

Embodiment 5

FIG. 7 is a flowchart of a method for reading and writing a radio frequency identification tag system according to an embodiment of the present invention. The radio frequency tag system includes: the radio frequency read/write head of the first embodiment, and the passive radio frequency identification tags of the second embodiment. As shown in FIG. 7, the method includes steps S702 to S706.

Step S702, determining a passive radio frequency identification tag currently read and written.

Step S704, controlling the light emitter corresponding to the currently read and write passive radio frequency identification tag in the radio frequency read/write head to emit light to supply power to the currently read and write passive radio frequency identification tag.

Step S706, performing read and write operations on the currently read and write passive radio frequency identification tags.

In an embodiment of the present invention, the step S706 may include: sending an inquiry instruction to the currently read and write passive radio frequency identification tag, wherein the inquiry instruction is used to query the passive radio frequency identification of the current read and write The status of the tag; receiving the first state of the currently read and write passive radio frequency identification tag. Preferably, the above state may be tag information or the like. The tag information may include identity information and location information.

In an embodiment of the present invention, the first state may be determined; when the first state indicates that the currently read and write passive radio frequency identification tag is blank, the tag information is allocated for the currently read and write passive radio frequency identification tag. .

In an embodiment of the present invention, the first state may be determined; when the first state indicates that the currently read and written passive radio frequency identification tag has tag information, requesting the currently read and write passive radio frequency identification tag to report the same Label Information.

In an embodiment of the present invention, the label information reported by the currently read and write passive radio frequency identification tag may be received; whether the received label information meets the preset condition; and the received label information does not meet the preset. When conditions are met, new tag information is assigned to the currently read and write passive RFID tags.

In an implementation manner of the embodiment of the present invention, after the currently read and write passive radio frequency identification tag is read and written, the optical transmitter corresponding to the currently read and write passive radio frequency identification tag may be turned off. Read and write to other passive RFID tags in multiple passive RFID tags.

8 is a structural block diagram of a read/write device of a radio frequency identification tag system according to an embodiment of the present invention. The device includes: a determining module 810 configured to determine a currently read and write passive radio frequency identification tag; and a control module 820 configured to control the radio frequency The optical transmitter corresponding to the currently read and write passive radio frequency identification tag emits light to supply power to the currently read and write passive radio frequency identification tag; the read/write module 830 is set to passive radio frequency identification for current reading and writing. The tag is read and written.

Preferred embodiments of the embodiments of the present invention are described below.

Preferred embodiment one

9 is a schematic diagram of a preferred radio frequency identification system in accordance with an embodiment of the present invention. As shown in FIG. 9, the system includes a radio frequency read/write head and a plurality of passive radio frequency identification tags.

The RF read/write head is composed of a plurality of light emitters, an RF antenna and a control chip. The basic architecture is shown in Figure 3. It is an active device that can emit light to the passive RFID tag through the light emitter. The RF signal can also be transmitted to the passive RFID tag to transmit commands, and the RF antenna can also receive the data signal transmitted by the passive RFID tag, and the control chip processes the data signal. In order to prevent multiple passive radio frequency identification tags from transmitting information at the same time, causing confusion of the information received by the radio frequency head, the order of receiving and transmitting information by the tag is controlled by controlling the transmission state of the light emitter (LED in the preferred embodiment). , that is, if you need to read and write information of a specified label, then open the corresponding light emitter above the corresponding label to charge it, read When the light emitter is turned off, the other labels are in a state of no power because the light emitter is turned off, so the signal cannot be received nor transmitted.

All passive RFID tags share the RF antenna of a RF read/write head, while the control and processing portion of the RF read/write head (including the chip) is located next to the idle position. One advantage of this is that there is no need to place a complete read/write head on each label, which reduces the cost and reduces the technical difficulty of reducing the size of the RF read/write head. A corresponding LED can be placed in the space above the narrow label. At the same time, the sharing of the RF antenna also reduces the cost and reduces the difficulty of installation.

Passive RFID tags include photoelectric converters, RF antennas and chips. The basic architecture is shown in Figure 4. First, the photoelectric converter converts the received light energy into electrical energy and transmits it to the RF antenna and chip. The RF antenna will receive the signal. After being transmitted to the chip, after the chip processes the data, the RF antenna is activated according to the requirements to transmit the reply signal to the RF read/write head.

Since the passive RFID tag itself is passive, the RF read/write head is first illuminated to charge the passive RFID tag, and then the RF read/write head issues corresponding commands to the passive RFID tag, and the passive RFID tag is received. After the instruction, the corresponding reply is transmitted through the own RF antenna, and the read/write head processes the response after receiving the reply. If the information is sufficient, the passive RFID tag is notified to be received and terminated; if the information is insufficient, the head is re-issued. Inquiring about the instructions, the passive RFID tag sends a reply as required until the head is satisfied. The head is not in contact with the passive RFID tag, but the distance is very short, generally limited to a short distance. For intelligent ODN applications, it can be limited to 1 cm or less. Point-to-point (P2P) technology for data transmission.

Preferred embodiment two

As shown in FIG. 9, the reading and writing of the tag information is initiated by the chip in the radio frequency read/write head. The passive radio frequency identification tag mainly stores the identity and location information, and the information is given by the radio frequency read/write head, and may also be The RF read/write head modifies the passive RF tag. The working power of the passive RFID tag is converted by the photoelectric converter. It is charged by the RF read/write head. The RF read/write head can control the passive RF. The state in which the light emitter above the label is turned on or off is determined to determine the corresponding label to read the information.

The structure of the RF read/write head is shown in Figure 3. It is an active device that includes multiple light emitters, one RF antenna, and one chip. Among them, the light emitter generally uses an LED, and its function is to charge the passive RFID tag; and the role of the RF antenna is to transmit the command to the passive RFID tag and receive the signal sent by the passive RFID tag. The chip can receive the command of the external network management, initiate reading and writing of the passive RFID tag, and can assign the identity and location information to the blank passive RFID tag, and can also perform the passive RFID tag of the existing identity information. Reading and comparison, you can also make corresponding information on passive RFID tags. The modification, the control chip can initiate the transmission and reading of information of a passive RFID tag through the on or off state of the LED, and finally the read/write head transmits the relevant information to the network management or the control center for storage.

The structure of the passive RFID tag is shown in Figure 4. It is passive in itself, including optoelectronic converters, RF antennas and chips. The photoelectric converter receives the light of the RF head and converts it into a power source for use by the RF antenna and the chip, and the RF antenna converts the received RF head read command into an electrical signal and transmits the signal to the chip; the chip can perform the command Processing, starting the RF antenna to reply, the RF antenna sends a reply signal according to the requirements of the chip, and the chip has the function of information storage.

Preferred embodiment three

Referring to FIG. 6, the passive RFID tag is placed on the fiber connector, and the corresponding LED light emitter is disposed above the tag, and the RF head control and processing part (including the chip, etc.) is placed in the idle place of the device, all of which are The tag shares the RF antenna of an RF read/write head. When the optical connector is inserted into the connection box, it indicates that the optical fiber is already in the connected state, and the label is just below the optical transmitter of the RF read/write head.

When reading and writing tags, the specific process of the workflow is as follows:

First, the read/write head receives the instruction of the network management or the control center to read and write the label, and the chip starts the reading and writing process. First, the LED corresponding to the tag passive radio frequency identification tag is turned on to the head, and then the following test is started. step:

1. Issue an inquiry command to the passive RFID tag, such as the status of the tag.

2. The passive RFID tag replies to the current status, such as blank or existing identity information.

3. If it is blank identity information, the head and the head allocate an identity information to the passive radio frequency identification tag; if the identity information is already available, the head and the head require the passive radio frequency identification tag to report the identity information.

4. After the passive RFID tag is executed, report its current identity information.

5. The head and the head verify the identity information. If the requirements are not met, the head re-assigns the new identity information of the passive RFID tag, and the passive RFID tag repeats step 4. Then the head re-evaluates the information if not Satisfied, repeat steps 3, 4, and 5.

If the feedback information meets the requirements, the head is read and issued, and the instruction of "End" is issued.

6. The passive RFID tag is received. Thank you for your order. Reply: "End, Confirm".

7. After the read/write head receives the reply, turn off the LED.

8. Read and write the head to open the LED corresponding to another passive RFID tag. Repeat steps 1-7.

From the above description, it can be seen that the present invention achieves the following technical effects:

Compared with pure RFID, the passive RFID tag does not need to balance the power supply problem. Therefore, the function of the antenna restores its instinct to transmit and receive radio frequency. The design can be made smaller, which greatly reduces the size and volume of the tag. The corresponding RF read/write head can also be dimensioned. It is only necessary to place an LED light emitter above the label. At the same time, the RF antenna and other parts are shared, which greatly reduces the cost and overcomes the fact that the pure RFID size cannot be made small. Limiting the problem of its application, passive RFID tags can solve the identification problem of dense optical connectors. Secondly, since the tag is charged by light, the head and the head only emit light to charge the tag when reading and writing, so that there is no problem of mispowering the adjacent tag, and the adjacent tag has no light irradiation. Sufficient power to support its reception and transmission of signals also solves the possibility of mis-judgment of adjacent heads in pure RFID.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, a passive radio frequency identification tag, a radio frequency read/write head, and a radio frequency identification system provided by the embodiments of the present invention have the following beneficial effects: first, the radio frequency antenna does not need to take care of the power supply, and the design can be made smaller and greatly reduced. The size and volume of the label, the corresponding RF head can also be considered regardless of the size, just place an LED light emitter above the label, and the RF antenna and other parts are shared, greatly reducing the cost; The source RFID tag can solve the identification problem of dense optical connectors. Secondly, since the tag is charged by light, the read/write head only emits light to charge the tag when reading and writing, so there is no mis-supply of adjacent tags. The problem of electricity, while adjacent tags have no enough light to support their receiving and transmitting signals because of no light, and also solve the possibility of adjacent competing transmission signals in pure RFID, which makes the heads misjudge.

Claims

An RF read/write head includes: a plurality of light emitters, chips, and RF antennas, wherein

The radio frequency antenna is connected to the chip;

The plurality of light emitters are connected to the chip;

The chip is configured to control, when a read/write operation is performed on the radio frequency identification tag in the plurality of radio frequency identification tags, to control the light emitter corresponding to the specified radio frequency identification tag in the plurality of light emitters to emit light Determining a radio frequency identification tag; and reading and writing the specified radio frequency identification tag.
The radio frequency read/write head according to claim 1, wherein said radio frequency read/write head comprises one of said radio frequency antennas.
The radio frequency read/write head according to claim 1, wherein each of said light emitters is a light emitting diode LED.
A passive radio frequency identification tag includes: a photoelectric converter, a radio frequency antenna, and a chip, wherein

The photoelectric converter is connected to the chip and the radio frequency antenna, and is configured to convert light energy emitted by the radio frequency head into electrical energy to supply power to the chip and the radio frequency antenna;

The radio frequency antenna is connected to the chip;

The chip is configured to store tag information and to respond to read and write operations of the radio frequency read/write head.
A radio frequency tag identification system includes: a plurality of passive radio frequency identification tags and a radio frequency read/write head, wherein

Each of the passive radio frequency identification tags includes: a photoelectric converter, a first radio frequency antenna, and a first chip, wherein the photoelectric converter is connected to the first chip and the first radio frequency antenna, and is configured to Converting light energy emitted by the radio frequency read/write head into electrical energy to supply power to the first chip and the first radio frequency antenna; the first chip is configured to store tag information, and to respond to the radio frequency read/write head Read and write operations;

The radio frequency read/write head includes: a plurality of light emitters, a second chip, and a second RF antenna, wherein the second RF antenna is connected to the second chip; the plurality of light emitters, and The second chip is connected to the second chip, and is configured to control the specified radio frequency in the plurality of optical transmitters when performing read and write operations on the radio frequency identification tags in the plurality of radio frequency identification tags Identification tag pair The appropriate light emitter emits light to turn on the designated radio frequency identification tag; and read and write the designated radio frequency identification tag.
The radio frequency tag identification system of claim 5 wherein said radio frequency read/write head comprises one of said second radio frequency antennas.
The radio frequency tag identification system of claim 5 wherein each of said light emitters is a light emitting diode LED.
A fiber optic connector is provided with the passive radio frequency identification tag of claim 4.
An optical fiber connection device, wherein the optical fiber connection device is provided with the radio frequency read/write head according to any one of claims 1 to 3;

The wiring device includes a plurality of connecting ports, each of the connecting ports being provided as a pluggable connection with the fiber optic connector of claim 8;

The plurality of optical transmitters of the radio frequency identification head are located, when a plurality of the optical fiber connectors are inserted into the plurality of connection ports, respectively facing the passive radio frequency identification tags on the corresponding fiber connector s position.
A method for reading and writing a radio frequency identification tag system, the radio frequency tag system comprising: the radio frequency read/write head according to any one of claims 1 to 3, and the plurality of passive radio frequency identification devices according to claim 4. Tag; the method includes:

Determining the passive RFID tag currently being read and written;

Controlling, by the optical transmitter corresponding to the currently read and write passive radio frequency identification tag, the light emitter of the radio frequency read/write head to supply power to the currently read and write passive radio frequency identification tag;

Read and write operations on the currently read and write passive RFID tags.
The method of claim 5, wherein the reading and writing operations of the currently read and write passive radio frequency identification tags comprise:

Sending an inquiry command to the currently read and write passive radio frequency identification tag, wherein the inquiry command is used to query a status of the currently read and write passive radio frequency identification tag;

Receiving a first state of the currently read and write passive radio frequency identification tag.
The method of claim 11 further comprising:

Determining the first state;

When the first status indicates that the currently read and write passive radio frequency identification tag is blank, the current read and write passive radio frequency identification tag is assigned tag information.
The method of claim 11 or 12, further comprising:

Determining the first state;

When the first state indicates that the currently read and write passive radio frequency identification tag has tag information, requesting the currently read and write passive radio frequency identification tag to report the tag information.
The method of claim 13 further comprising:

Receiving the label information reported by the currently read and write passive radio frequency identification tag;

Determining whether the received tag information meets a preset condition;

When the received tag information does not meet the preset condition, the currently read and write passive radio frequency identification tag is assigned new tag information.
The method of claim 10, after the reading and writing operation of the currently read and write passive radio frequency identification tag, further comprising:

Off the optical transmitter corresponding to the currently read and write passive radio frequency identification tag in the radio frequency read/write head;

Reading and writing operations on other passive radio frequency identification tags of the plurality of passive radio frequency identification tags.
A read/write device for a radio frequency identification tag system, the radio frequency tag system comprising: the radio frequency read/write head according to any one of claims 1 to 3, and the plurality of passive radio frequency identification devices according to claim 4. a label; the device comprises:

Determining a module, configured to determine a passive radio frequency identification tag currently being read or written;

The control module is configured to control the light emitters corresponding to the currently read and write passive radio frequency identification tags in the radio frequency read/write head to supply power to the currently read and write passive radio frequency identification tags;

The read/write module is configured to perform read and write operations on the currently read and write passive radio frequency identification tag.